<?php
class Admin_Bootstrap extends Zend_Application_Module_Bootstrap
{
    protected function _initSession(array $options = array())
    {
        $this->getApplication()->bootstrap('db');
        $db = $this->getApplication()->getResource('db');
        $config = array(  'name'    => 'session',
                          'primary' => 'id',
                          'modifiedColumn' => 'modified',
                          'dataColumn'       => 'data',
                          'lifetimeColumn'   => 'lifetime' );
        Zend_Session::setSaveHandler(new Zend_Session_SaveHandler_DbTable($config));
        Zend_Session::start();
    }
}

